Magnifying apparatus



Feb. 19, 1929. 1,702,317

H. N. ROSE IAGNIFYING APPARATUS Filed March 21, 1927 lzny fie/mn Rose INVENTOR- aroma.

Patented Feb. 19, 1929.

UNITED STATES HENRY NELSON ROSE, OF COLUMBUS, OHIO.

MAGNIFYING APPARATUS.

Application filed March 21, 1927.

My invention relates to a magnifying apparatus and, more particularly, to amagnliying apparatus for making a comparison as to the similarity of two objects so small thatthe details of these objects are not clearly visible to the naked eye.

Heretofore, when it was desired to compare a plurality of small objects, in order to determine their similarity or dissimilarity, 1t has been necessary to examine one specimen at a time and then make the comparison of the details from memory. This frequently defeated the very purpose of the magnifying apparatus, since it is comparatively easy to overlook a slight difference in specimens of such small size when it is only possible to study the details of one specimen at a time and no comparison can be made with another specimen without moving the apparatus from one to another or changing the specimen under the glass.

The primary object of my invention is to provide a magnifying apparatus wherein two or more objects may be compared without moving the apparatus from one specimen to the other or changing the specimens on the ap aratus.

nother object of my invention is to provide a device wherein specimens, each of which consists of a number of separate objects, may be compared with one another with no danger of the specimens becoming mixed.

Other objects of my invention will appear in the following descri tion and the pre ferred embodiment may be had from the accompanying drawings wherein similar characters of reference designate corresponding parts and wherein:

The figure is a perspective view of my invention as disclosed in the following detailed description.

By reference to the drawing, it will be seen that I have provided a frame comprising a portion 1, having the portions 2 and 3 hinged to the opposite ends thereof. The frame is, preferably, constructed in the manner shown in the drawing to permit it to be folded for convenience in carrying and, at the same time, provide a device wherein the portions 2 and 3 will be substantially perpendicular to the portion 1 and in superposed relation to one another when the device is opened into opera tive position.

The up er portion 2 has a convex glass lens 4 centrally disposed therein, the glass lens operating to increase the apparent size of an Serial No. 176,887.

object viewed through it. The lower portion 3 of the device has the depressions 5 therein, these depressions being, preferably, divided or separated by a partition or parting strip 6. As shown in the drawing, I have provided two depressions 5, but, I do not WlSh to be limited to any specific number.

Black, or other dark colored material is placed in the bottom of each depression 5. A black, or other dark colored material, is used, preferably, since it is well known that materials of a dark or dull color absorb light rays instead of radiating them, as would be the case if white or light colored material were used. Such provision makes it much easier for the observer to discern the minute details of a small object.

The provision of two or more depressions 5, having a partition or dividing strip between them, makes it possible to compare two or more specimens at the same time, without danger of the specimens becoming mixed and without moving the magnifying glass or placing the specimens under the glass lens at different times. This reduces to a minimum the probability of error or of an incomplete comparison.

It will be easily understood, by referring to the previous description and the drawing attached hereto, that I have provided a magnifying device wherein it is possible to compare a number of small objects such as grains of sand, when there is a single grain in each depression or when there is a number of such grains. It will also be understood that I have provided a device wherein the specimen or specimens placed thereon will be easily seen and wherein there will be no danger of the specimens becoming mixed with one another.

Having thus described my invention, what I claim is:

1. In a magnifying apparatus, a standard member, a plate hinged to the bottom of said standard member and constructed to normally extend at ri ht angles in relation to said standard mem er, said plate having its upper surface provided with grooves spaced apart and designed to receive products, an upper plate hinged to said standard and constructed to normally extend at right angles in relation to said standard and in superposed parallelism with said first named plate, apd a magnifying glass in said last named p ate.

2. In a magnifying apparatus, a standard III member, a plate hinged to the bottom of said standard member and constructed to normally extend at right angles in relation to said standard member and to serve as a supporting base therefor, said plate having its upper surface provided with darkened grooves separated by a narrow ridge and designed to receive different products -tor con1- parison, an upper plate hinged to said standard and constructed to normally extend at 10 right angles in relation to said standard and in superposed parallelism with said first named plate, and a magnifying glass in said last named plate directly over such grooves.

In testimony whereof, I hereby afiix my 15 signature.

HENRY NELSON ROSE. 

